Not sure about the pairing of Turin and Thor. Could a mortal man stand against the God of Thunder? Granted, Turin is prophesied to be the one who slays Morgoth in the Dagor Dagorath but I always assumed that he'd strike the final blow after the Valar had softened Morgoth up. Does Turin have the power to slay gods and angelic beings on his own?

Captain America - Aragorn Iron Man - The Witch-king (in his armored form, of course) The Hulk - Durin's Bane Black Widow - Eowyn (also considered Faramir. The two of them stalking each other through the forests of Ithilien would be pretty awesome) Hawkeye - Legolas Thor - Gandalf